zig cc fails to link Go plugin under Mac M1 due to -flat_namespace

[misha-ridge]

Zig Version

0.11.0-dev.1987+a2c6ecd6d

Steps to Reproduce and Observed Behavior

Trying to compile+linux Go plugins (they require C compiler) under zig cc fails due to lack of -flat_namespace support.

Reproducer repository is here: https://github.com/misha-ridge/p, clone and make:

roman@C10 p % make
CC=“zig cc” LD=“zig cc” go build -buildmode=plugin .
# github.com/misha-ridge/p
/Users/roman/tectonic/_deps.darwin-arm64/go-1.20.1/pkg/tool/darwin_arm64/link: running zig failed: exit status 1
error: unsupported linker arg: -flat_namespace

make: *** [all] Error 1
roman@C10 p %

This happens with Go 1.20.1 (maybe others too, didn't check)

Expected Behavior

Go plugins can be linked by zig cc. They work well under Linux/x86-64.